Compressor and similar device



Nov. 22, 1938.

COMPRESSOR AND SIMILAR DEVICE Filed 001;. 23, 1936 2 Sheets-Sheet lINVENTCR.

gm/ ama 2 d.

w. J. HILL-IARD 2,137,649

COMPRESSOR AND SIMILAR DEVICE Filed Oct. 23, 193.6 2 Sheets-Sheet 2INVENTOR.

ATTORNEY.

Patented Nov. 22, 1938 UNITED STATES PATENT j OFFl-CE 2,1a7,c4e gCOMPRESSOR AND SIMILAR. DEVICE William J. Hilliard, st. omit, Mo.

Application October 23, 1936, Serial No. 107,201

Claims.

This invention relates to power driven devices, such for instance ascompressors, although not necessarilylimited thereto, as the essence ofthe invention is applicable to power producing devices 5 such as enginesand the like, and mechanisms transmitting power from one part toanother.

An essential object of the invention is the provision of means fo'rconverting rotary motion into reciprocating motion, and, reciprocatingmotion into rotary motion.

A further object of the invention is the provision of means foroscillating the machine element which reciprocates during itsreciprocating movement.

' A further object ofthe invention is the provision of means forimparting oscillating motion to a reciprocating member.

A further object of the invention is the provision of means foreffectively lubricating the mov- 20 ing parts.

A still further object of the invention resides in the provision of amechanism which will be simple in construction, and which can be usedeither for the purpose of producing power, or employing power as a primemover therefor.

With the above and'other objects in view, the invention consists in thenovel features of construction, arrangement and combination of partshereinafter more fully described and finally pointed out in the claimshereto appended.

Referring to the accompanying drawings forming a part of thisspecification, wherein like characters of reference denote similar partsthroughout the several views:

Fig. 1 is a vertical sectional view of a compressor embodying thefeatures of my invention.

Fig. 2 is a horizontal sectional view of the device taken through thecylinder and the reciprocating member with the reciprocating member inits outer position.

Fig. 3 is a horizontal sectional view of the device taken through thecylinder and midway of the reciprocating member in itsJinner position.

Fig. 4 is a side elevation of the reciprocating member showing the raceformed on the outer face thereof.

Fig. 5 is a vertical sectional view showing the driving member and thetorque member in operative positions.

.Fig. 6 is a side elevation of the oscillating drive member which isalso a duplicate of the oscillat ing torque member.

Fig. 7 is a side elevation of the oscillating drive member from anotherside thereof.

' Fig. 8 is a plan view looking at one side of the rotary member.

Fig. 9 is a plan view looking at the opposite side of the rotary member.v

In carrying out the invention, in one embodiment thereof only, whichembodiment is illustrated asa compressor, I employ a suitable basemember I which can be in the form of a casing and adapted to house anelectric motor designated generally as 2, the armature shaft 3 of whichis supported in suitable bearings designated 4.

A suitable cylinder 5 is supported above the casing I by means ofsuitable supporting legs 6 which are suitably secured to the casing l.The cylinder is preferably closed at its outer end and open at its innerend, and is illustrated as of the vertical type, although it is apparentthat it can be of the horizontal type. The cylinder 5 is provided in thewall thereof with a short longitudinal groove 1 serving as an'outlet,which is fully open to the interior of the cylinder, and also providedwith a relatively long passage 8 which is open at its ends to theinterior of the cylinder and has outer and inner end ports 9 and Ill,respectively. An intake pipe II is secured to the cylinder adjacent theinner end port I0 and an exhaust or delivery pipe I2 is connected to thecylinder opposite the inner end port ID.

A suitable reciprocable'member l3, such as a piston, in one embodimentthereof, is mounted within the cylinder 5, and it is provided with acentral bore l4 open tothe inner end thereof. The 'reciprocatihgmemberI3 is provided at opposite ends withsuitable piston rings, designated I5and IS. The reciprocating member !3 can, as is manifest, be actuated toserve either as a driven member or a driving member, dependent upon whatclass of a device it is used in connection with.

In the embodiment shown, the reciprocating member I3 is provided on itsperipheral face with ashort internal facial groove l1 disposedlongitudinally thereof. The opposite side of the reciprocating member I3is provided with a relatively long passage 18 terminating at its outerend in an intake port l9 and at its inner end in an outlet port 20. Asuitable endless race formed of two curved grooved stretches 2| and 22,is formed on the peripheral face of the reciprocating member l3 with oneend of each stretch meeting with the other stretch, out of interferencewith the recess l1 and the passage l8 and its ends [9 and 2B, and is sodesigned as to receive the elongated end 23 of a cylindrical body 24serving as torque member andmounted to oscillate in a transverse bore 25in the wall of the cylinder. The body 24 is backed by means of a closureplug 26 with a ball 21 therebetween, Reciprocating and oscillatingmovement of the member l3 serves to oscillate the torque member. Thisarrangement serves to impart oscillating movement to the piston duringreciprocating movement thereof.

The means for imparting reciprocating movement to the member l3 embodiesa suitable rotatable member 28, which in one embodiment thereof, isshown as tubular or sleeve like in form, having a longitudinal passage29, and, which. is suitably secured at its inner end to one end of thearmature shaft 3 of the motor 2, so, as to rotate therewith. The rotarymember 28 can, as is manifest, be actuated to serve either'as a drivingmember or a driven member, dependent upon,

what class of device it is used in connection with. The rotary member 28projects into the bore- M- of the reciprocating member l3, and is,provided upon its peripheral face with an elongatedendless groovefashioned to serve as a race. The end turns 30 of the race are arcuateinshape and they aredisposed in suitably spaced relation on one sideonlyof the rotary member 28. The stretches 3| and 32 connecting the endturns 38 of the race are spirally fashioned and they cross or intersecteach other intermediate the end turns 30 on the opposite side of therotary member 28 from that on which the, end turns30 of the race areformed. Thus, viewing the, race from, a. plan standpoint, if flattenedout, it will appear as a figure eight running, longitudinally'of theIrotary member 28 so that the member 28 can rotate, in either direction,as desired. The race. stretches connecting the end turns 38,,it will beapparent, serves as gradual right and left hand grooved stretches.

The race formed on the rotary member 28 is in the nature of av recessedor grooved race track with the exception that both end turns 38 arepreferably of equal size and shape and formed on one side of the rotarymember 28 and the spiral stretches 3| and 32 cross or intersect midwaythe end turns 30 on the, opposite side of the rotary member 28.

A drive member including a, cylindrical body 33 and a narrow elongated,tongue 34 formed on one end thereof, serves as a: drive, connection,between the reciprocating and rotary members l3 and 28, respectively.The body portion 33 ofthe. drive connection is mounted in a. suitablydimensioned transverse bore 35 in the wall of'the reciprocating memberl3 and is backed by a suitable closure member 36, and a ball 31therebetween, soas to be free to oscillate in the bore 35. The tongueend 34 of the body 33 engages and rides in the race on the rotary member28 and during rotation of the member 28. it travels in the race and dueto the curvature of the race walls, oscillating movement is imparted tothe body 33 of the drive member and its projecting tongue 34.

It. will be apparent that one complete revolution of the rotary member28 will impart one complete outward stroke to the reciprocating memberI3, and that a second revolution of the member 28 in the same directionwill. impart an inward or return stroke to the reciprocating member l3.

In order to. efficiently lubricate the cylinder wall, the reciprocatingmember and the rotary member, I provide the inner end of the rotarymember, when tubular or sleeve like in structure, with a seriesofsuitable openings 38 at a point below the inner end of the cylinder 5,thus, when lubricant is contained within the hood to an elevationsuflicient to enter the openings 38, the interior of the rotary member28 serves as a well 39 so that during the outward stroke of thereciprocating member 13 lubricant is sucked through the rotary member 28and into the chamber 40 formed between the outer end of the rotarymember and the head of the reciprocating member l3, which lubricant uponthe inward stroke of the reciprocating member [3, isthen forced underpressure out of the openings 38 into the hood chamber 41 surrounding thecylinder 5, and,

in addition thereto rotation of the rotary member 28. imparts rotarymotion to a suitable disc 42 secured to the, rotary member 28 whichrides in engagement with the case I for circulating lubri-' cant; bycentrifugal force within the hood and onto the, cylinder and itsassociated parts. The wall of the cylinder can be provided with a seriesof suitable openings 43=v for additionally feeding the wall of thecylinder with lubricant.

When the rotary and reciprocating members l3 and 28 are used in acompressor construction, as shown, or in a similar construction such asa pump or explosive engine, fluid to be compressed is taken into thecompression chamber of the cylinder between the head thereof and thehead of the reciprocating. member through intake pipe H, facial grooveI! on thereciprocating member l3 and the cylinder passage 8 immediatelyafter the, starting of the, outward stroke of the reciprocating memberI3v and compressed during; the remainder of the outward stroke. Thecompressed fluid is discharged or exhausted during the first part of thereturn or inward stroke of the reciprocating member, the, dischargebeing through the cylinder groove 1, the passage HIV in thereciprocating member and the outlet pipe l2.

It will be apparent from the foregoingdescription read in connectionwith the drawings, that I provide a simple means for converting. rotarymotion into reciprocating motion, and vice-versa; that this feature isadapted to other devices than that illustrated; that I provide novelmeans for imparting oscillating movement to the reciprocating member;that I provide novelmeans of lubricating the moving parts and thateither the rotary or the reciprocating members can be actuated to serveasa prime mover for the other.

The many advantages of the herein described inventionv will readilysuggest themselves to those skilled in the art to which. it appertains.

From the foregoing description, it is evident that. a simple device forthis purpose has been disclosed, but it is to be understood that I donot desire to restrict, or limit myself to the very details of theconstruction shown and described, which is merely illustrative, it beingobviousthat changes, not involving the exercise. of invention, may bemade without conflicting or departing from the spirit of the inventionwithin the scope of the appended claims.

What I claim is:

1. In combination, a cylinder, of a rotary member having an endless wayformed with its end turn disposed upon one side of the member and itsstretches intersecting each other midway the end turns on the other sideof the member, a member reciprocably mounted upon the rotary member, adrive member including a cylindrical body having a transverse tongueconnecting said firstmentioned members, and said'drive connection beingmounted to oscillate between the first mentioned members during theirrespective movements.

2. A device as defined in claim 1, including oscillating means forimparting oscillating movement to the reciprocating member duringreciprocating movement thereof.

3. In combination, a cylinder provided with a valve controlled inlet anda valve controlled outlet intermediate the ends of the cylinder, amember mounted for reciprocation in said cylinder, a member mounted forrotation relative to and in unison with the reciprocating member, adrive member connecting the rotary and reciprocating members and soformed and arranged as to oscillate therebetween, and means between thecylinder and the reciprocating member for imparting oscillating motionto the reciprocating member during movement thereof.

l. A device of the character defined in claim 3, including means soformed and arranged relative to the cylinder, reciprocating member androtary member to take a charge of lubricant into the reciprocatingmember through the rotary memher during outward movement of thereciprocating member and to set up a lubricant spray during inwardmovement of the reciprocating member.

5. In a compressor, the combination of a base including a casing, a legsupported cylinder secured to the casing, said cylinder having a closedouter end and open inner end, the inner end being spaced from the casingby means of the legs, an electric motor disposed within the casing,bearings mounted in apertured bosses formed as a part of the casing andthrough which bearings the motor armature shaft passes, a sleeve likerotary member having peripheral openings adjacent its inner end, saidrotary member being secured at its inner end to one end of the armatureshaft and in axial alignment with the shaft so that the end of the shaftserves asa closure for the inner end of the sleeve like rotary member, apiston mounted for reciprocation within the cylinder and havingtelescopic connection with the rotary sleeve like member, an endlessrace formed with its end turns disposed upon one side of the rotarymember and its stretches spirally formed and intersecting each other onthe opposite side of the rotary member, a drive member connecting thepiston and the rotary member, said drive member being so formed andarranged relative to the piston and rotary members as to engage in therace and oscillate between the piston and rotary members duringmovements thereof, means for imparting oscillating movement to thepiston during reciprocating movement thereof, intake and dischargepassages for the cylinder controlled by the oscillation andreciprocation of the piston, a hood encasing the cylinder and secured atits inner end to the casing to form a chamber for the reception of alubricant, a disc mounted for engagement with the casing and secured tothe rotary member for rotation therewith, and said piston during theoutstroke thereof sucking lubricant through the sleeve like rotarymember into the piston and spraying the lubricant under pressure withinthe hood during the instroke of the piston.

WILLIAM J. HILLIARD.

